The OP made a point indirectly related to your issue. 6) Features of the sport that low-level swimmers find unpleasant, excellent swimmers enjoy. What othe

The OP made a point indirectly related to your issue. 6) Features of the sport that low-level swimmers find unpleasant, excellent swimmers enjoy. What others see as boring – swimming back and forth over a black line for two hours, say – the best swimmers find peaceful, even meditative, or challenging, or therapeutic. They enjoy hard practices, look forward to difficult competitions, and try to set difficult goals. You'll find motivation to master anything if you actually love it. When you truly enjoy learning something, it isn't a chore anymore. It sounds like you should contemplate why you want to get back into math. Do you actually want to do it or is there some alternate reason? Make sure you are honest with yourself.